EP2615921B1 - Amine oxide surfactants for controlling herbicide spray drift - Google Patents
Amine oxide surfactants for controlling herbicide spray drift Download PDFInfo
- Publication number
- EP2615921B1 EP2615921B1 EP11825846.6A EP11825846A EP2615921B1 EP 2615921 B1 EP2615921 B1 EP 2615921B1 EP 11825846 A EP11825846 A EP 11825846A EP 2615921 B1 EP2615921 B1 EP 2615921B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- salt
- glyphosate
- ammonium
- amine oxide
- water soluble
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007921 spray Substances 0.000 title claims description 78
- 239000004094 surface-active agent Substances 0.000 title claims description 59
- 230000002363 herbicidal effect Effects 0.000 title claims description 56
- 239000004009 herbicide Substances 0.000 title claims description 50
- 150000001412 amines Chemical class 0.000 title description 4
- 239000000203 mixture Substances 0.000 claims description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 150000003512 tertiary amines Chemical class 0.000 claims description 45
- 239000012141 concentrate Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 30
- 150000003839 salts Chemical class 0.000 claims description 30
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 claims description 26
- 239000005562 Glyphosate Substances 0.000 claims description 20
- 229940097068 glyphosate Drugs 0.000 claims description 20
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 14
- 239000005631 2,4-Dichlorophenoxyacetic acid Substances 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- VDCHTAFVUAPYGO-UHFFFAOYSA-N n-methylmethanamine;2-(phosphonomethylamino)acetic acid Chemical group CNC.OC(=O)CNCP(O)(O)=O VDCHTAFVUAPYGO-UHFFFAOYSA-N 0.000 claims description 11
- ZEKANFGSDXODPD-UHFFFAOYSA-N glyphosate-isopropylammonium Chemical compound CC(C)N.OC(=O)CNCP(O)(O)=O ZEKANFGSDXODPD-UHFFFAOYSA-N 0.000 claims description 10
- OXJISOJFVQITNG-UHFFFAOYSA-M 2,4-D choline Chemical group C[N+](C)(C)CCO.[O-]C(=O)COC1=CC=C(Cl)C=C1Cl OXJISOJFVQITNG-UHFFFAOYSA-M 0.000 claims description 9
- JJWLVOIRVHMVIS-UHFFFAOYSA-O isopropylaminium Chemical compound CC(C)[NH3+] JJWLVOIRVHMVIS-UHFFFAOYSA-O 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 239000005504 Dicamba Substances 0.000 claims description 6
- IWEDIXLBFLAXBO-UHFFFAOYSA-N dicamba Chemical compound COC1=C(Cl)C=CC(Cl)=C1C(O)=O IWEDIXLBFLAXBO-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-O triethylammonium ion Chemical compound CC[NH+](CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-O 0.000 claims description 6
- IUQJDHJVPLLKFL-UHFFFAOYSA-N 2-(2,4-dichlorophenoxy)acetate;dimethylazanium Chemical group CNC.OC(=O)COC1=CC=C(Cl)C=C1Cl IUQJDHJVPLLKFL-UHFFFAOYSA-N 0.000 claims description 5
- 125000006702 (C1-C18) alkyl group Chemical group 0.000 claims description 4
- 239000005627 Triclopyr Substances 0.000 claims description 4
- MMTOJQXQRBHILG-UHFFFAOYSA-N azane;2-(2-hydroxyethoxy)ethanol Chemical compound N.OCCOCCO MMTOJQXQRBHILG-UHFFFAOYSA-N 0.000 claims description 4
- WZEMSIKSCALWJZ-UHFFFAOYSA-N azane;ethanol Chemical compound N.CCO.CCO WZEMSIKSCALWJZ-UHFFFAOYSA-N 0.000 claims description 4
- ZXVOCOLRQJZVBW-UHFFFAOYSA-N azane;ethanol Chemical compound N.CCO ZXVOCOLRQJZVBW-UHFFFAOYSA-N 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 claims description 4
- 229960001231 choline Drugs 0.000 claims description 4
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical group CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 claims description 4
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 claims description 4
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-O triethanolammonium Chemical compound OCC[NH+](CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-O 0.000 claims description 4
- REEQLXCGVXDJSQ-UHFFFAOYSA-N trichlopyr Chemical compound OC(=O)COC1=NC(Cl)=C(Cl)C=C1Cl REEQLXCGVXDJSQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 21
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 15
- 239000000523 sample Substances 0.000 description 12
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000009472 formulation Methods 0.000 description 7
- 239000012266 salt solution Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- ROKVVMOXSZIDEG-UHFFFAOYSA-N 2-(3,5,6-trichloropyridin-2-yl)oxyacetate;triethylazanium Chemical compound CCN(CC)CC.OC(=O)COC1=NC(Cl)=C(Cl)C=C1Cl ROKVVMOXSZIDEG-UHFFFAOYSA-N 0.000 description 3
- 239000013068 control sample Substances 0.000 description 3
- -1 organo ammonium salts Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000002794 2,4-DB Substances 0.000 description 1
- YIVXMZJTEQBPQO-UHFFFAOYSA-N 2,4-DB Chemical compound OC(=O)CCCOC1=CC=C(Cl)C=C1Cl YIVXMZJTEQBPQO-UHFFFAOYSA-N 0.000 description 1
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 description 1
- LLWADFLAOKUBDR-UHFFFAOYSA-N 2-methyl-4-chlorophenoxybutyric acid Chemical compound CC1=CC(Cl)=CC=C1OCCCC(O)=O LLWADFLAOKUBDR-UHFFFAOYSA-N 0.000 description 1
- 239000005468 Aminopyralid Substances 0.000 description 1
- 125000006539 C12 alkyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 241000282461 Canis lupus Species 0.000 description 1
- 239000005500 Clopyralid Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 229920005682 EO-PO block copolymer Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000005574 MCPA Substances 0.000 description 1
- 239000005575 MCPB Substances 0.000 description 1
- 101150039283 MCPB gene Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 231100000674 Phytotoxicity Toxicity 0.000 description 1
- 239000005595 Picloram Substances 0.000 description 1
- WHKUVVPPKQRRBV-UHFFFAOYSA-N Trasan Chemical compound CC1=CC(Cl)=CC=C1OCC(O)=O WHKUVVPPKQRRBV-UHFFFAOYSA-N 0.000 description 1
- 230000000895 acaricidal effect Effects 0.000 description 1
- 239000000642 acaricide Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- NIXXQNOQHKNPEJ-UHFFFAOYSA-N aminopyralid Chemical compound NC1=CC(Cl)=NC(C(O)=O)=C1Cl NIXXQNOQHKNPEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- GCTOSMYFALESJI-UHFFFAOYSA-N azane;2-methylpropan-2-ol Chemical compound N.CC(C)(C)O GCTOSMYFALESJI-UHFFFAOYSA-N 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- HUBANNPOLNYSAD-UHFFFAOYSA-N clopyralid Chemical compound OC(=O)C1=NC(Cl)=CC=C1Cl HUBANNPOLNYSAD-UHFFFAOYSA-N 0.000 description 1
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 1
- ZRKZFNZPJKEWPC-UHFFFAOYSA-N decylamine-N,N-dimethyl-N-oxide Chemical compound CCCCCCCCCC[N+](C)(C)[O-] ZRKZFNZPJKEWPC-UHFFFAOYSA-N 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 229940100242 glycol stearate Drugs 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000002418 insect attractant Substances 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- ONHFWHCMZAJCFB-UHFFFAOYSA-N myristamine oxide Chemical compound CCCCCCCCCCCCCC[N+](C)(C)[O-] ONHFWHCMZAJCFB-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000002420 orchard Substances 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- NQQVFXUMIDALNH-UHFFFAOYSA-N picloram Chemical compound NC1=C(Cl)C(Cl)=NC(C(O)=O)=C1Cl NQQVFXUMIDALNH-UHFFFAOYSA-N 0.000 description 1
- 239000005962 plant activator Substances 0.000 description 1
- 239000005648 plant growth regulator Substances 0.000 description 1
- LFULEKSKNZEWOE-UHFFFAOYSA-N propanil Chemical compound CCC(=O)NC1=CC=C(Cl)C(Cl)=C1 LFULEKSKNZEWOE-UHFFFAOYSA-N 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/24—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients to enhance the sticking of the active ingredients
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
- A01N25/06—Aerosols
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
- A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
- A01N37/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
- A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
- A01N39/04—Aryloxy-acetic acids; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
Definitions
- Spray drift during application can be reduced by incorporating certain tertiary amine oxide surfactants into an aqueous herbicidal spray mixture containing glyphosate and an auxinic herbicide. Methods and compositions to reduce spray drift during the application of an aqueous herbicidal spray mixture are described herein.
- the methods to reduce spray drift during the application of an aqueous herbicidal spray mixture containing glyphosate and an auxinic herbicide include incorporating into the aqueous herbicidal spray mixture from 0.02 to 2 weight percent of a tertiary amine oxide surfactant of the formula: wherein R 4 is a straight or branched chain (C 10 -C 18 ) alkyl or an alkyletherpropyl of the formula: wherein R 7 is a straight or branched chain (C 10 -C 18 ) alkyl, and R 5 and R 6 independently are straight or branched chain (C 1 -C 18 ) alkyl or ethoxylates or propoxylates of the formula: wherein n is an integer from 1 to 20, or mixtures thereof.
- aqueous concentrate compositions include from 5 to 40 weight percent of a water soluble salt of at least one auxinic herbicide, 5 to 40 weight percent of a water soluble salt of glyphosate, and from 1 to 20 weight percent of one or more of the tertiary amine oxide surfactants, wherein the cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide are selected from the group consisting of isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- the methods and compositions reduce the amount of driftable fines of a herbicide spray in both aerial and ground spray applications.
- the methods include the use of compositions incorporating tertiary amine oxide surfactants, or mixtures thereof, into aqueous herbicidal spray mixtures containing a water soluble glyphosate salt and at least one water soluble auxinic herbicide salt.
- Particularly useful auxinic herbicides to which this method applies include clopyralid, triclopyr, 2,4-D, 2,4-DB, MCPA, MCPB, dicamba, aminopyralid, and picloram.
- the methods described herein are most particularly useful for the application of herbicides that are subject to restricted applications around sensitive crops such as spray mixtures containing glyphosate and 2,4-D, triclopyr or dicamba.
- Suitable cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide used in the spray mixtures described herein include isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, dimethylethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- the cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide are selexcted from the group consisting of isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- tertiary amine oxide surfactants useful with the methods and compositions described herein may be prepared from petroleum derived raw materials or from naturally derived raw materials such as, for example, vegetable, animal, algae, or seed oils, or from combinations of petroleum derived or naturally derived raw materials.
- tertiary amine oxide surfactants refer to trialkyl amine oxides of the formula wherein R 4 is a straight or branched chain (C 10 -C 18 ) alkyl or an alkyletherpropyl of the formula wherein R 7 is a straight or branched chain (C 10 -C 18 ) alkyl, and R 5 and R 6 independently are straight or branched chain (C 1 -C 18 ) alkyl or ethoxylates or propoxylates of the formula wherein n is an integer from 1 to 20, or mixtures thereof.
- tertiary amine oxide surfactants include those found in the following products such as, for example, Ammonyx® C (R 4 is cocoalkyl; R 5 and R 6 are methyl), Ammonyx® MO (R 4 is straight chain C 14 alkyl; R 5 and R 6 are methyl), Ammonyx® MCO (R 4 is indicated to be predominantly a mixture of straight chain C 14 and C 16 alkyls; R 5 and R 6 are methyl), and Ammonyx® LO (R 4 is straight chain C 12 alkyl; R 5 and R 6 are methyl) (the Ammonyx® line of products are available from Stepan Company, Northfield, IL); Rhodamox® LO (R 4 is indicated to be predominantly a mixture of straight chain C 12 and C 14 alkyls; R 5 and R 6 are methyl) (Rhodia-Novecare; Cranbury, NJ); Aromox® C/12 (R 4 is cocoalkyl; R 5 and R 6 are 2-hydroxethyl) (the Aromox
- the tertiary amine oxide surfactant, and mixtures thereof can be incorporated into the aqueous herbicidal spray mixture, for example, by being tank-mixed directly with the diluted herbicidal formulation.
- the tertiary amine oxide surfactant, and mixtures thereof may be incorporated into the aqueous spray mixture at a concentration from 0.02 to 2 weight percent of the final spray mixture, preferably from 0.05 to 1.0 weight percent of the final spray mixture, and most preferably from 0.05 to 0.2 weight percent of the final spray mixture.
- the optimum spray droplet size depends on the application for which the composition is used. If droplets are too large, there will be less coverage by the spray; i.e, large droplets will land in certain areas while areas in between will receive little or no spray coverage.
- the maximum acceptable droplet size may depend on the amount of composition being applied per unit area and the need for uniformity in spray coverage. Smaller droplets provide more even coverage, but are more prone to drift during spraying. Thus, application parameters such as uniformity in spray coverage must be balanced against the tendency for smaller droplets to drift. For example, if it is particularly windy during spraying, larger droplets may be needed to reduce drift, whereas on a calmer day smaller droplets may be acceptable.
- spray droplet size may also depend on the spray apparatus, e.g., nozzle size and configuration.
- the reduction in spray drift may result from a variety of factors including a reduction in the production of fine spray droplets ( ⁇ 150 ⁇ m minimum diameter) and an increase in the volume median diameter (VMD) of the spray droplets.
- VMD volume median diameter
- the median diameter of the plurality of spray droplets created using the compositions and methods described herein is increased above that of a spray composition that does not include the tertiary amine oxide surfactants as described herein.
- aqueous concentrate compositions are also described.
- aqueous concentrate compositions are solutions containing high concentrations of the aqueous herbicidal spray components described above, i.e., a water soluble glyphosate salt, one or more water soluble auxinic herbicide salts, and one or more tertiary amine oxide surfactants.
- the aqueous concentrate compositions are intended to be diluted to provide aqueous herbicidal spray mixtures for use, for example, with the methods described herein.
- the aqueous concentrate compositions include from 5 to 40 weight percent of one or more water soluble salts of an auxinic herbicide, from 5 to 40 weight percent of a water soluble salt of glyphosate, and from 1 to 20 weight percent of one or more tertiary amine oxide surfactants.
- the aqueous concentrate compositions are preferably solutions containing the one or more tertiary amine oxide surfactant, or mixtures thereof, dissolved or dispersed in the formulation containing the auxinic herbicide and glyphosate.
- the aqueous concentrate compositions contain 10 to 40 weight percent of the water soluble glyphosate salt; 10 to 40 weight percent of the one or more water soluble auxinic herbicide salts; and 1 to 18, 1 to 16, 1 to 14, 1 to 12, 1 to 10, 1 to 9, 1 to 8, 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, 1 to 2, or 1 to 1.5 weight percent of the one or more tertiary amine oxide surfactants.
- the aqueous concentrate compositions contain 15 to 30, 20 to 30, or 25 to 30 weight percent of the water soluble glyphosate salt; 15 to 30, 20 to 30, or 25 to 30 weight percent of the one or more water soluble auxinic herbicide salts; and 1 to 18, 1 to 16, 1 to 14, 1 to 12, 1 to 10, 1 to 9, 1 to 8, 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, 1 to 2, or 1 to 1.5 weight percent of the one or more tertiary amine oxide surfactants.
- the aqueous concentrate compositions can be stored in suitable containers as will be readily recognized by one of skill in the art and can be, for example, solutions, emulsions, or suspensions.
- Aqueous solutions i.e., including both concentrates and spray solutions, containing 2,4-D and glyphosate are prone to incompatibility under certain conditions and concentrations leading to product performance issues and difficulty in using the products, i.e., difficulty with field applications of the products.
- Incompatibility in concentrate compositions is minimized by the use of very small amounts of 2,4-D, such as less than 3 wt% ae (acid equivalent) relative to the total composition.
- compositions described herein may contain surfactants in addition to the tertiary amine oxide surfactants mentioned herein.
- the additional surfactants may be anionic, cationic, or nonionic in character.
- typical surfactants include alcohol-alkylene oxide addition products, such as tridecyl alcohol-C 16 ethoxylate; sorbitol esters, such as sorbitol oleate; quaternary amines, such as lauryl trimethylammonium chloride; ethoxylated amines, such as tallowamine ethoxylated; betaine surfactants, such as cocoamidopropyl betaine; fatty acid amidopropyl dimethylamine surfactants such as cocoamidopropyl dimethylamine; alkylpolyglycoside surfactants; polyethylene glycol esters of fatty acids, such as polyethylene glycol stearate; block copolymers of ethylene oxide and propylene oxide; salts of mono and dialkyl
- compositions optionally containing one or more additional compatible ingredients are provided herein.
- additional ingredients may include, for example, one or more pesticides or other ingredients, which may be dissolved or dispersed in the composition and may be selected from acaricides, bactericides, fungicides, insecticides, herbicides, herbicide safeners, insect attractants, insect repellents, plant activators, plant growth regulators, and synergists.
- any other additional ingredients providing functional utility such as, for example, dyes, stabilizers, fragrants, viscosity-lowering additives, compatibility agents, and freeze-point depressants may be included in these compositions.
- Herbicide concentrates containing 228 grams acid equivalent per liter (g ae/L) 2,4-D choline, 240 g ae/L glyphosate dimethyl ammonium (DMA), 60 g/L propylene glycol, and 36 g/L (dry weight basis) of the indicated tertiary amine oxide surfactants were prepared as described below using the following aqueous samples of the amine oxide surfactants:
- a 50 milliliter (mL) volumetric flask was first charged with 23.58 g of a 48.35 wt% ae of a 2,4-D choline salt solution in water. To the volumetric flask, 3.00 g of propylene glycol was added and the liquids were then blended by hand shaking the flask until the contents were homogenous. Next, 24.52 g of a 48.95 wt% ae of a glyphosate DMA solution in water was added to the flask. The volumetric flask was once again hand shaken until the contents were blended and homogenous.
- the tertiary amine oxide surfactant was added (3.60 g of Aromox® C/12 solution; 6.00 g for all others) and the flask was hand shaken until the contents were blended and homogenous.
- deionized water was added to fill the volumetric flask to the 50 mL mark. The sample was then blended by shaking the solution by hand until the liquid was homogenous. Seven samples containing one each of the tertiary amine oxide surfactants listed above and one concentrate containing no tertiary amine oxide surfactant (i.e., control sample) were prepared in this manner.
- Each of the herbicide concentrates were then diluted in water to make a 2.49% v/v spray solution of each by taking 11.21 mL of the herbicide concentrate, placing it into 438.80 mL of deionized water and then lightly shaking by hand until each spray sample was homogenous.
- the eight spray solutions were sprayed using a Teejet® 8002 flat fan nozzle (Teejet Technologies; Wheaton, IL) at 40 psi (276 kiloPascal) and the spray droplet size distribution measurement was performed with a Sympatec Helos/KF high resolution laser diffraction particle sizer with an R7 lens (Sympatec GmbH; Clausthal-Zellerfeld, Germany).
- the tip of the nozzle was situated 12 inches (30.5 centimeters) above the path of the laser beam of the Sympatec particle sizer.
- the percentage of driftable fines was expressed as the volume percentage of spray droplets below 150 ⁇ m volume mean diameter (VMD) as shown in Table 1.
- Table 1 Spray Droplet Analysis of Herbicide Sprays Containing Tertiary Amine Oxide Surfactants Tertiary Amine Oxide Surfactant Spray Droplet VMD, ⁇ m Volume Percent Driftable Fines ⁇ 150 ⁇ m VMD none (control) 155 48.1% Ammonyx® C 206 31.9% Ammonyx® MO 198 33.9% Ammonyx® MCO 204 32.4% Ammonyx® LO 200 33.5% Rhodamox® LO 201 33.0% Aromox® C/12 235 23.1% Ammonyx® DO 165 43.7%
- Herbicide concentrates containing 114 g ae/L 2,4-D DMA, 120 g ae/L glyphosate DMA, 30 g/L propylene glycol, and 18 g/L (dry weight basis) of the tertiary amine oxide surfactants listed in Example 1 were prepared as follows. A 100 mL volumetric flask was first charged with 20.56 g of a 55.44 wt% ae 2,4-D DMA salt solution in water. To the volumetric flask, 3.00 g of propylene glycol was added and the liquids were then blended by hand shaking the flask until the contents were homogenous.
- Each of the herbicide concentrates was then diluted in water to make a 4.99% v/v spray solution of each by taking 22.46 mL of the herbicide concentrate and placing it into 427.55 mL of deionized water and then lightly shaking by hand until each spray sample was homogenous.
- the eight spray solutions were sprayed using the same procedure and technique described in Example 1. The results are shown in Table 2.
- Table 2 Spray Droplet Analysis of Herbicide Sprays Containing Tertiary Amine Oxide Surfactants Tertiary Amine Oxide Surfactant Spray Droplet VMD, ⁇ m Volume Percent Driftable Fines ⁇ 150 ⁇ m VMD none (control) 150 50.2% Ammonyx® C 225 26.9% Ammonyx® MO 230 25.5% Ammonyx® MCO 220 28.0% Ammonyx® LO 198 34.2% Rhodamox® LO 192 35.8% Aromox® C/12 235 22.3% Ammonyx® DO 159 46.0%
- Example 3 Tank-mixed spray solution containing dicamba diglycol ammonium (DGA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant.
- DGA dicamba diglycol ammonium
- IPA glyphosate isopropyl ammonium
- a tank-mixed spray solution containing dicamba diglycol ammonium (DGA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant was prepared.
- a sample container was first charged with 276.73 mL of deionized water and then 4.56 g of 30% w/w Ammonyx® LO solution was added and mixed.
- Rodeo® herbicide concentrate commercial 4 pounds acid equivalent per gallon (lb ae/gal) glyphosate IPA salt solution from Dow AgroSciences, LLC
- Clarity® herbicide concentrate commercial 4 lb ae/gal dicamba DGA salt solution from BASF Corporation (Florham Park, NJ) were added and the sample was then shaken by hand until the mixture was homogenous ( ⁇ 1 minute).
- the sample was sprayed using the same procedure and technique described in Example 1. The results, along with that for a control spray sample mixed the same way, but containing no tertiary amine oxide surfactant are shown in Table 3.
- Table 3 Spray Droplet Analysis of a Herbicide Spray Containing Ammonyx® LO Tertiary Amine Oxide Surfactant Spray Droplet VMD, ⁇ m Volume Percent Driftable Fines ⁇ 150 ⁇ m VMD none (control) 164 44.7% Ammonyx® LO 229 21.6%
- Example 4 Tank-mixed spray solution containing triclopyr triethyl ammonium (TEA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant.
- TAA triclopyr triethyl ammonium
- IPA glyphosate isopropyl ammonium
- a tank-mixed spray solution containing triclopyr triethyl ammonium (TEA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant was prepared.
- a sample container was first charged with 275.48 mL of deionized water and then 0.79 g of 30% w/w Ammonyx® LO solution was added and mixed.
- Rodeo® herbicide concentrate commercial 4 lb ae/gal glyphosate IPA salt solution from Dow AgroSciences, LLC
- Garlon 3A® herbicide concentrate commercial 3 lb ae/gal triclopyr TEA salt solution from Dow AgroSciences, LLC
- Table 4 The results, along with that for a control spray sample containing no tertiary amine oxide surfactant are shown in Table 4.
- Table 4 Spray Droplet Analysis of a Herbicide Spray Containing Ammonyx® LO Tertiary Amine Oxide Surfactant Spray Droplet VMD, ⁇ m Volume Percent Driftable Fines ⁇ 150 ⁇ m VMD none (control) 158 47.2% Ammonyx® LO 240 24.1%
- Example 5 Concentrate Containing Tomamine® AO-728 Special
- a glyphosate/2,4-D concentrate formulation was prepared by blending 22.01 g of 2,4-D choline concentrate (44.30 wt% acid equivalent (ae)), 3.0 g propylene glycol, 21.22 g of glyphosate DMA concentrate (48.30 wt% ae), 3.53 g of Tomamine® AO-728 Special (50% active linear alkylpropylamine oxide, 1.77 g active; AirProducts; Allentown, PA), and sufficient water to charge a 50 mL volumetric flask.
- the formulation contained 205 g/L glyphosate DMA (ae) and 195 g/L 2,4-D choline (ae).
- the resulting herbicide concentrate was then diluted in deionized water to make a 4.38% (vol/vol) spray solution in a similar manner as described in Example 1.
- the spray solution was sprayed using the same procedure and technique described in Example 1.
- Table 5 Spray Droplet Analysis of a Herbicide Spray Containing Tomamine® AO-728 Tertiary Amine Oxide Surfactant Spray Droplet VMD, ⁇ m Volume Percent Driftable Fines ⁇ 150 ⁇ m VMD none (control)* 148 51.1% Tomamine® AO-728 Special 201 34.0%
- the control sample was prepared using glyphosate DMA and 2,4-D choline.
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Description
- Agricultural spraying by economical and available technologies uses hydraulic spray nozzles that inherently produce a wide spectrum of spray droplet sizes. The potential for these spray droplets to drift from the initial, desired site of application is found to be a function of droplet size, with smaller droplets having a higher propensity for off-target movement. Significant research efforts, involving numerous field trials, wind tunnel tests and subsequent generation of predictive math models have led to a greatly enhanced understanding of the relationship between spray droplet size and potential for off-target drift. Although other factors such as meteorological conditions and spray boom height contribute to the potential for drift, spray droplet size distribution has been found to be a predominant factor. Teske et. al. (Teske M. E., Hewitt A. J., Valcore, D. L. 2004. The Role of Small Droplets in Classifying Drop Size Distributions ILASS Americas 17th Annual Conference: Arlington VA) have reported a value of <156 microns (µm) as the fraction of the spray droplet distribution that contributes to drift. Robert Wolf (Wolf, R. E., Minimizing Spray Drift, December 15, 1997, Microsoft® PowerPoint Presentation, available at www.bae.ksu.edu/faculty/wolf/drift.htm, last viewed September 6, 2011) cites a value of <200 µm as the driftable fraction. A good estimation of droplet size likely to contribute to drift, therefore, is the fraction below about 150 µm.
- The negative consequences of off-target movement can be quite pronounced. Some herbicides have demonstrated very sensitive phytotoxicity to particular plant species at extremely low parts per million (ppm) or even parts per billion (ppb) levels, resulting in restricted applications around sensitive crops, orchards, and residential plantings. For example, the California Dept of Pesticide Regulation imposes buffers of ½ - 2 miles for propanil containing herbicides applied aerially in the San Joaquin valley.
Viscoelastic systems for drift reduction of pesticidal formulations comprising cationic nitrogen-based surfactants are described inWO 2010/026127 A1 . Thickened glyphosate formulations comprising nitrogen-containing surfactants are described inWO 2010/020599 A1 . - Spray drift during application can be reduced by incorporating certain tertiary amine oxide surfactants into an aqueous herbicidal spray mixture containing glyphosate and an auxinic herbicide. Methods and compositions to reduce spray drift during the application of an aqueous herbicidal spray mixture are described herein. The methods to reduce spray drift during the application of an aqueous herbicidal spray mixture containing glyphosate and an auxinic herbicide include incorporating into the aqueous herbicidal spray mixture from 0.02 to 2 weight percent of a tertiary amine oxide surfactant of the formula:
R5 and R6 independently are straight or branched chain (C1-C18) alkyl or ethoxylates or propoxylates of the formula: - Additionally, aqueous concentrate compositions are described that include from 5 to 40 weight percent of a water soluble salt of at least one auxinic herbicide, 5 to 40 weight percent of a water soluble salt of glyphosate, and from 1 to 20 weight percent of one or more of the tertiary amine oxide surfactants, wherein the cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide are selected from the group consisting of isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- Methods and compositions to reduce spray drift are described herein. The methods and compositions reduce the amount of driftable fines of a herbicide spray in both aerial and ground spray applications. The methods include the use of compositions incorporating tertiary amine oxide surfactants, or mixtures thereof, into aqueous herbicidal spray mixtures containing a water soluble glyphosate salt and at least one water soluble auxinic herbicide salt. Particularly useful auxinic herbicides to which this method applies include clopyralid, triclopyr, 2,4-D, 2,4-DB, MCPA, MCPB, dicamba, aminopyralid, and picloram. The methods described herein are most particularly useful for the application of herbicides that are subject to restricted applications around sensitive crops such as spray mixtures containing glyphosate and 2,4-D, triclopyr or dicamba.
- Suitable cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide used in the spray mixtures described herein include isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, dimethylethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline. In the aqueous concentrates according to the present invention the cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide are selexcted from the group consisting of isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- The tertiary amine oxide surfactants useful with the methods and compositions described herein may be prepared from petroleum derived raw materials or from naturally derived raw materials such as, for example, vegetable, animal, algae, or seed oils, or from combinations of petroleum derived or naturally derived raw materials.
- As used herein tertiary amine oxide surfactants refer to trialkyl amine oxides of the formula
- The tertiary amine oxide surfactant, and mixtures thereof, can be incorporated into the aqueous herbicidal spray mixture, for example, by being tank-mixed directly with the diluted herbicidal formulation. The tertiary amine oxide surfactant, and mixtures thereof, may be incorporated into the aqueous spray mixture at a concentration from 0.02 to 2 weight percent of the final spray mixture, preferably from 0.05 to 1.0 weight percent of the final spray mixture, and most preferably from 0.05 to 0.2 weight percent of the final spray mixture.
- The optimum spray droplet size depends on the application for which the composition is used. If droplets are too large, there will be less coverage by the spray; i.e, large droplets will land in certain areas while areas in between will receive little or no spray coverage. The maximum acceptable droplet size may depend on the amount of composition being applied per unit area and the need for uniformity in spray coverage. Smaller droplets provide more even coverage, but are more prone to drift during spraying. Thus, application parameters such as uniformity in spray coverage must be balanced against the tendency for smaller droplets to drift. For example, if it is particularly windy during spraying, larger droplets may be needed to reduce drift, whereas on a calmer day smaller droplets may be acceptable.
- In addition to the physical properties of a particular aqueous composition, spray droplet size may also depend on the spray apparatus, e.g., nozzle size and configuration. The reduction in spray drift may result from a variety of factors including a reduction in the production of fine spray droplets (<150 µm minimum diameter) and an increase in the volume median diameter (VMD) of the spray droplets. In any event, for a given spray apparatus, application, and conditions, and based on the tertiary amine oxide surfactant used, the median diameter of the plurality of spray droplets created using the compositions and methods described herein is increased above that of a spray composition that does not include the tertiary amine oxide surfactants as described herein.
- In addition to the methods described above, aqueous concentrate compositions are also described. As used herein aqueous concentrate compositions are solutions containing high concentrations of the aqueous herbicidal spray components described above, i.e., a water soluble glyphosate salt, one or more water soluble auxinic herbicide salts, and one or more tertiary amine oxide surfactants. The aqueous concentrate compositions are intended to be diluted to provide aqueous herbicidal spray mixtures for use, for example, with the methods described herein. The aqueous concentrate compositions include from 5 to 40 weight percent of one or more water soluble salts of an auxinic herbicide, from 5 to 40 weight percent of a water soluble salt of glyphosate, and from 1 to 20 weight percent of one or more tertiary amine oxide surfactants. The aqueous concentrate compositions are preferably solutions containing the one or more tertiary amine oxide surfactant, or mixtures thereof, dissolved or dispersed in the formulation containing the auxinic herbicide and glyphosate. Preferably the aqueous concentrate compositions contain 10 to 40 weight percent of the water soluble glyphosate salt; 10 to 40 weight percent of the one or more water soluble auxinic herbicide salts; and 1 to 18, 1 to 16, 1 to 14, 1 to 12, 1 to 10, 1 to 9, 1 to 8, 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, 1 to 2, or 1 to 1.5 weight percent of the one or more tertiary amine oxide surfactants. Most preferably the aqueous concentrate compositions contain 15 to 30, 20 to 30, or 25 to 30 weight percent of the water soluble glyphosate salt; 15 to 30, 20 to 30, or 25 to 30 weight percent of the one or more water soluble auxinic herbicide salts; and 1 to 18, 1 to 16, 1 to 14, 1 to 12, 1 to 10, 1 to 9, 1 to 8, 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, 1 to 2, or 1 to 1.5 weight percent of the one or more tertiary amine oxide surfactants. The aqueous concentrate compositions can be stored in suitable containers as will be readily recognized by one of skill in the art and can be, for example, solutions, emulsions, or suspensions.
- Aqueous solutions, i.e., including both concentrates and spray solutions, containing 2,4-D and glyphosate are prone to incompatibility under certain conditions and concentrations leading to product performance issues and difficulty in using the products, i.e., difficulty with field applications of the products. Incompatibility in concentrate compositions is minimized by the use of very small amounts of 2,4-D, such as less than 3 wt% ae (acid equivalent) relative to the total composition. High-strength aqueous compositions of certain organo ammonium salts of 2,4-D and glyphosate where the weight ratio (ae basis) of the 2,4-D salt to the glyphosate salt is from 2.3:1 to 1:2.3 and the compositions may contain up to or greater than 450 g ae/L of total active ingredients are described in
U.S. Application Serial No.12/763,566 . These compositions are generally homogeneous and free-flowing at temperatures ranging from 54 °C to -10°C. - Optionally, the compositions described herein may contain surfactants in addition to the tertiary amine oxide surfactants mentioned herein. The additional surfactants may be anionic, cationic, or nonionic in character. Examples of typical surfactants include alcohol-alkylene oxide addition products, such as tridecyl alcohol-C16 ethoxylate; sorbitol esters, such as sorbitol oleate; quaternary amines, such as lauryl trimethylammonium chloride; ethoxylated amines, such as tallowamine ethoxylated; betaine surfactants, such as cocoamidopropyl betaine; fatty acid amidopropyl dimethylamine surfactants such as cocoamidopropyl dimethylamine; alkylpolyglycoside surfactants; polyethylene glycol esters of fatty acids, such as polyethylene glycol stearate; block copolymers of ethylene oxide and propylene oxide; salts of mono and dialkyl phosphate esters; and mixtures thereof. The additional surfactant or mixture of surfactants is usually present at a concentration of from 0.5 to 20 weight percent of the formulation.
- Additionally, compositions optionally containing one or more additional compatible ingredients are provided herein. These additional ingredients may include, for example, one or more pesticides or other ingredients, which may be dissolved or dispersed in the composition and may be selected from acaricides, bactericides, fungicides, insecticides, herbicides, herbicide safeners, insect attractants, insect repellents, plant activators, plant growth regulators, and synergists. Also, any other additional ingredients providing functional utility such as, for example, dyes, stabilizers, fragrants, viscosity-lowering additives, compatibility agents, and freeze-point depressants may be included in these compositions.
- The following Examples are presented to illustrate various aspects of the compositions and methods described herein.
- Herbicide concentrates containing 228 grams acid equivalent per liter (g ae/L) 2,4-D choline, 240 g ae/L glyphosate dimethyl ammonium (DMA), 60 g/L propylene glycol, and 36 g/L (dry weight basis) of the indicated tertiary amine oxide surfactants were prepared as described below using the following aqueous samples of the amine oxide surfactants:
- 1. Ammonyx® C, 30% w/w cocoalkyldimethylamine oxide in water
- 2. Ammonyx® MO, 30% weight/weight (w/w) myristyldimethylamine oxide in water
- 3. Ammonyx® MCO, 30% w/w (C14 and C16) linear alkyldimethylamine oxide in water
- 4. Ammonyx® LO, 30% w/w lauryldimethylamine oxide in water
- 5. Rhodamox® LO, 30% w/w (C12 and C14) linear alkyldimethylamine oxide in water
- 6. Aromox® C/12, 50% w/w dihydroxyethyl cocoalkylamine oxide in water
- 7. Ammonyx® DO, 30% w/w decyldimethylamine oxide in water
- A 50 milliliter (mL) volumetric flask was first charged with 23.58 g of a 48.35 wt% ae of a 2,4-D choline salt solution in water. To the volumetric flask, 3.00 g of propylene glycol was added and the liquids were then blended by hand shaking the flask until the contents were homogenous. Next, 24.52 g of a 48.95 wt% ae of a glyphosate DMA solution in water was added to the flask. The volumetric flask was once again hand shaken until the contents were blended and homogenous. Next, the tertiary amine oxide surfactant was added (3.60 g of Aromox® C/12 solution; 6.00 g for all others) and the flask was hand shaken until the contents were blended and homogenous. Lastly, deionized water was added to fill the volumetric flask to the 50 mL mark. The sample was then blended by shaking the solution by hand until the liquid was homogenous. Seven samples containing one each of the tertiary amine oxide surfactants listed above and one concentrate containing no tertiary amine oxide surfactant (i.e., control sample) were prepared in this manner.
- Each of the herbicide concentrates were then diluted in water to make a 2.49% v/v spray solution of each by taking 11.21 mL of the herbicide concentrate, placing it into 438.80 mL of deionized water and then lightly shaking by hand until each spray sample was homogenous. The eight spray solutions were sprayed using a Teejet® 8002 flat fan nozzle (Teejet Technologies; Wheaton, IL) at 40 psi (276 kiloPascal) and the spray droplet size distribution measurement was performed with a Sympatec Helos/KF high resolution laser diffraction particle sizer with an R7 lens (Sympatec GmbH; Clausthal-Zellerfeld, Germany). The tip of the nozzle was situated 12 inches (30.5 centimeters) above the path of the laser beam of the Sympatec particle sizer. The percentage of driftable fines was expressed as the volume percentage of spray droplets below 150 µm volume mean diameter (VMD) as shown in Table 1.
Table 1: Spray Droplet Analysis of Herbicide Sprays Containing Tertiary Amine Oxide Surfactants Tertiary Amine Oxide Surfactant Spray Droplet VMD, µm Volume Percent Driftable Fines < 150 µm VMD none (control) 155 48.1% Ammonyx® C 206 31.9% Ammonyx® MO 198 33.9% Ammonyx® MCO 204 32.4% Ammonyx® LO 200 33.5% Rhodamox® LO 201 33.0% Aromox® C/12 235 23.1% Ammonyx® DO 165 43.7% - Herbicide concentrates containing 114 g ae/L 2,4-D DMA, 120 g ae/L glyphosate DMA, 30 g/L propylene glycol, and 18 g/L (dry weight basis) of the tertiary amine oxide surfactants listed in Example 1 were prepared as follows. A 100 mL volumetric flask was first charged with 20.56 g of a 55.44 wt% ae 2,4-D DMA salt solution in water. To the volumetric flask, 3.00 g of propylene glycol was added and the liquids were then blended by hand shaking the flask until the contents were homogenous. Next, 24.52 g of a 48.95 wt% ae glyphosate DMA salt solution in water were added to the flask. The volumetric flask was once again hand shaken until the contents were blended and homogenous. Next, the tertiary amine oxide surfactant was added (3.60 g of Aromox® C/12; 6.00 g for all others) and the flask was hand shaken until the contents were blended and homogenous. Lastly, deionized water was added to fill the volumetric flask to the 100 mL mark. The sample was then blended by shaking the solution by hand until the liquid was homogenous. Seven samples containing the tertiary amine oxide surfactants listed above and one concentrate containing no tertiary amine oxide surfactant (i.e., control sample) were prepared in this manner.
- Each of the herbicide concentrates was then diluted in water to make a 4.99% v/v spray solution of each by taking 22.46 mL of the herbicide concentrate and placing it into 427.55 mL of deionized water and then lightly shaking by hand until each spray sample was homogenous. The eight spray solutions were sprayed using the same procedure and technique described in Example 1. The results are shown in Table 2.
Table 2: Spray Droplet Analysis of Herbicide Sprays Containing Tertiary Amine Oxide Surfactants Tertiary Amine Oxide Surfactant Spray Droplet VMD, µm Volume Percent Driftable Fines < 150 µm VMD none (control) 150 50.2% Ammonyx® C 225 26.9% Ammonyx® MO 230 25.5% Ammonyx® MCO 220 28.0% Ammonyx® LO 198 34.2% Rhodamox® LO 192 35.8% Aromox® C/12 235 22.3% Ammonyx® DO 159 46.0% - A tank-mixed spray solution containing dicamba diglycol ammonium (DGA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant was prepared. A sample container was first charged with 276.73 mL of deionized water and then 4.56 g of 30% w/w Ammonyx® LO solution was added and mixed. Next, 11.22 mL of Rodeo® herbicide concentrate (commercial 4 pounds acid equivalent per gallon (lb ae/gal) glyphosate IPA salt solution from Dow AgroSciences, LLC) and 7.49 mL of Clarity® herbicide concentrate (commercial 4 lb ae/gal dicamba DGA salt solution from BASF Corporation (Florham Park, NJ) were added and the sample was then shaken by hand until the mixture was homogenous (< 1 minute). The sample was sprayed using the same procedure and technique described in Example 1. The results, along with that for a control spray sample mixed the same way, but containing no tertiary amine oxide surfactant are shown in Table 3.
Table 3: Spray Droplet Analysis of a Herbicide Spray Containing Ammonyx® LO Tertiary Amine Oxide Surfactant Spray Droplet VMD, µm Volume Percent Driftable Fines < 150 µm VMD none (control) 164 44.7% Ammonyx® LO 229 21.6% - A tank-mixed spray solution containing triclopyr triethyl ammonium (TEA) salt, glyphosate isopropyl ammonium (IPA) salt, and a tertiary amine oxide surfactant was prepared. A sample container was first charged with 275.48 mL of deionized water and then 0.79 g of 30% w/w Ammonyx® LO solution was added and mixed. Next, 8.73 mL of Rodeo® herbicide concentrate (commercial 4 lb ae/gal glyphosate IPA salt solution from Dow AgroSciences, LLC) and 15.0 mL of Garlon 3A® herbicide concentrate (commercial 3 lb ae/gal triclopyr TEA salt solution from Dow AgroSciences, LLC) were added and the sample was then shaken by hand until the mixture was homogenous (< 1 minute). The sample was sprayed using the same procedure and technique described in Example 1. The results, along with that for a control spray sample containing no tertiary amine oxide surfactant are shown in Table 4.
Table 4: Spray Droplet Analysis of a Herbicide Spray Containing Ammonyx® LO Tertiary Amine Oxide Surfactant Spray Droplet VMD, µm Volume Percent Driftable Fines < 150 µm VMD none (control) 158 47.2% Ammonyx® LO 240 24.1% - A glyphosate/2,4-D concentrate formulation was prepared by blending 22.01 g of 2,4-D choline concentrate (44.30 wt% acid equivalent (ae)), 3.0 g propylene glycol, 21.22 g of glyphosate DMA concentrate (48.30 wt% ae), 3.53 g of Tomamine® AO-728 Special (50% active linear alkylpropylamine oxide, 1.77 g active; AirProducts; Allentown, PA), and sufficient water to charge a 50 mL volumetric flask. The formulation contained 205 g/L glyphosate DMA (ae) and 195 g/L 2,4-D choline (ae).
- The resulting herbicide concentrate was then diluted in deionized water to make a 4.38% (vol/vol) spray solution in a similar manner as described in Example 1. The spray solution was sprayed using the same procedure and technique described in Example 1. The results are shown in Table 5.
Table 5: Spray Droplet Analysis of a Herbicide Spray Containing Tomamine® AO-728 Tertiary Amine Oxide Surfactant Spray Droplet VMD, µm Volume Percent Driftable Fines < 150 µm VMD none (control)* 148 51.1% Tomamine® AO-728 Special 201 34.0% The control sample was prepared using glyphosate DMA and 2,4-D choline.
Claims (11)
- A method to reduce spray drift during the application of an aqueous herbicidal spray mixture containing glyphosate and an auxinic herbicide comprising incorporating into the aqueous herbicidal spray mixture from 0.02 to 2 weight percent of a tertiary amine oxide surfactant of the formula:wherein R7 is a straight or branched chain (C10-C18) alkyl, andR5 and R6 independently are straight or branched chain (C1-C18) alkyl or ethoxylates or propoxylates of the formula:wherein n is an integer from 1 to 20,or mixtures thereof.
- The method of Claim 1, wherein the auxinic herbicide is a water soluble salt of 2,4-D, a water soluble salt of triclopyr, a water soluble salt of dicamba, or mixtures thereof.
- An aqueous concentrate composition comprising of a water soluble salt of at least one auxinic herbicide, a water soluble salt of glyphosate, and from 1 to 20 weight percent of a tertiary amine oxide surfactant, wherein the tertiary amine oxide surfactant comprises a tertiary amine oxide surfactant of the formula:wherein R7 is a straight or branched chain (C10-C18) alkyl, andR5 and R6 independently are straight or branched chain (C1-C18) alkyl or ethoxylates or propoxylates of the formula:wherein n is an integer from 1 to 20,or mixtures thereof,wherein the amount of the water soluble salt of the at least one auxinic herbicide is 5 to 40 weight percent and the amount of the water soluble salt of glyphosate is 5 to 40 weight percent, andwherein the cations contained in the water soluble salt of glyphosate and the water soluble salt of the auxinic herbicide are selected from the group consisting of isopropyl ammonium, dimethyl ammonium, triethyl ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, diethyleneglycol ammonium, triisopropanol ammonium, tetramethyl ammonium, tetraethyl ammonium, and choline.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is a water soluble salt of 2,4-D.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is 2,4-D choline salt.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is 2,4-D dimethyl ammonium salt.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is 2,4-D choline salt or 2,4-D dimethyl ammonium salt and the glyphosate is glyphosate dimethyl ammonium salt or glyphosate isopropyl ammonium salt.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the tertiary amine oxide surfactant is lauryldimethylamine oxide.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is 2,4-D choline salt or 2,4-D dimethyl ammonium salt, the glyphosate is glyphosate dimethyl ammonium salt or glyphosate isopropyl ammonium salt, and the tertiary amine oxide surfactant is a lauryldimethylamine oxide.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is 2,4-D choline salt, the glyphosate is glyphosate dimethyl ammonium salt, and the tertiary amine oxide surfactant is a lauryldimethylamine oxide.
- The method of claim 1 or the aqueous concentrate composition of claim 3, wherein the auxinic herbicide is a salt of 2,4-D and the weight ratio of the 2,4-D salt to the glyphosate salt is from 2.3:1 to 1:2.3.
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DK16179213.0T DK3111764T3 (en) | 2010-09-15 | 2011-09-14 | TENSIDES OF THE AMINE TYPE FOR MANAGING HERBICID SPRAY DRIVE |
PL16179213T PL3111764T3 (en) | 2010-09-15 | 2011-09-14 | Amine surfactants for controlling herbicide spray drift |
PL11825846T PL2615921T3 (en) | 2010-09-15 | 2011-09-14 | Amine oxide surfactants for controlling herbicide spray drift |
EP16179213.0A EP3111764B1 (en) | 2010-09-15 | 2011-09-14 | Amine surfactants for controlling herbicide spray drift |
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EP16179213.0A Division-Into EP3111764B1 (en) | 2010-09-15 | 2011-09-14 | Amine surfactants for controlling herbicide spray drift |
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